Finding the Fourth Proportional to 21,759.37, 32,646.83 and 13,429.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,759.37 : 32,646.83 = 13,429.69 : x
2. Step 2: Convert to fraction form
   21,759.37/32,646.83 = 13,429.69/x
3. Step 3: Cross multiply
   21,759.37x = 32,646.83 × 13,429.69
4. Step 4: Simplify right side
   21,759.37x = 438,436,657.62
5. Step 5: Solve for x
   x = 438,436,657.62/21,759.37
6. Step 6: Final answer
   x = 20,149.33